What is the longest you can leave a baby unchanged for without it being really gross? I try and change DD's nappy every 2 hours, a full nappy doesn't bother her (6 weeks old) so it's a case of trying to remember, or doing it with every feed. Overnight though, she wakes for a feed and needs to be fed right now or else screams the place down, but once fed falls asleep. I'm loathe to change her nappy on one hand, as she then wakes up and won't go down again for ages, but on the other hand it seems a bit cruel to leave her in the same nappy for 6 hours. I confess I have done this, it doesn't seem to bother her, she doesn't have a rash or anything as a result, but feels a bit wrong. Is it??